Table 1.

Baseline Characteristics of the Enrolled Patients

Characteristics	Benign SETs* (n=7)	Leiomyoma (n=5)	GIST
			Low-grade malignancy (n=20)	High-grade malignancy (n=12)	p-value†
Male sex	3 (42.9)	2 (40.0)	8 (40.0)	6 (50.0)	0.848
Age, yr	51 (37–72)	54 (22–69)	63 (36–84)	59 (41–70)	0.105
Location					0.083
Esophagus	0	2 (40.0)	0	0
Stomach	6 (85.7)	3 (60.0)	17 (85.0)	9 (75.0)
Duodenum	1 (14.3)	0	1 (5.0)	2 (16.7)
Rectum	0	0	2 (10.0)	1 (8.3)
Size, mm	25 (16–33)	29 (19–34)	27 (16–50)	34 (15–65)	0.824

Data are presented as number (%) or median (range).

SETs, subepithelial tumors; GIST, gastrointestinal stromal tumor.

^*Benign SETs included schwannoma (n=3), glomus tumor (n=2), ectopic pancreas (n=1), and paraganglioma (n=1). Low-grade malignancies included very low-risk GISTs (n=2) and low-risk GISTs (n=18). High-grade malignancies included intermediate risk GISTs (n=8) and high-risk GISTs (n=4);

^†p-value was compared between leiomyoma, low- and high-grade malignancy GISTs.